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Part Name
Description
KBD43W13 View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
Manufacturer
KBD43W13
Keyboard and PS/2 Mouse Controller
SMSC -> Microchip
KBD43W13 Datasheet PDF : 22 Pages
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PIN DESCRIPTION
PIN NO.
(40 Pin
(44 Pin
DIP)
PLCC)
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11,26
12,13,14,
15,16,17,
18,19
20
11
1,12,13,
23,29,34
14,15,16,
17,18,19,
20,21
22
21
24
22
25
23
26
24
27
25
28
27
30
28
31
29
32
30
33
FUNCTION
I/O
NAME
AT MODE
PS/2 MODE
I
T0
K/B Clock Input
K/B Clock Input
I
X1
Crystal Clock I/P
Crystal Clock I/P
I
X2
Crystal Clock I/P
Crystal Clock I/P
I
nRESET Chip Reset
Chip Reset
-
VCC Optional +5V Power Optional + 5V Power
Supply
Supply
I
nCS Chip Select
Chip Select
-
GND Optional Ground
Optional Ground
Power
Power
I
nRD I/O Read
I/O Read
I
A2
Connect to Address Connect to Address
A2
A2
I
nWR I/O Write
I/O Write
-
NC
Reserved
Reserved
I/O
D0
−
D7 Data Bus D0
−
D7
Data Bus D0
−
D7
-
O
O
I/O
I/O
-
I/OPU*
I/OPU*
I/O
I/O
GND
P20
P21
P22
P23
VCC
P10
P11
P12
P13
Ground Power
Supply
Bit 0 of Port2
(nRC: System
Reset)
Bit 1 of Port2
(nGA20: GATE A20)
Bit 2 of Port2
(NC: User-defined
I/O)
Bit 3 of Port2
(NC: User-defined
I/O)
Optional +5V Power
Supply
Bit 0 of Port1
(User-defined I/O)
Bit 1 of Port1
(User-defined I/O)
Bit 2 of Port2
(User-defined I/O)
Bit 3 of Port1
(User-defined I/O)
4
Ground Power Supply
Bit 0 of Port2
(nRC: System Reset)
Bit 1 of Port2
(nGA20: GATE A20)
Bit 2 of Port2
(MDAT: Mouse Data
Output)
Bit 3 of Port2
(MCLK: Mouse Clock
Output)
Optional + 5V Power
Supply
Bit 0 of Port1
(K/B Data Input)
Bit 1 of Port1
(Mouse Data Input)
Bit 2 of Port2
(User-defined I/O)
Bit 3 of Port1
(User-defined I/O)
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